Advantages of diapause in <i>Trichogramma dendrolimi</i> mass production on eggs of the Chinese silkworm, <i>Antheraea pernyi</i>

Zhang, Junjie; Zhang, Xue; Zang, Lian‐Sheng; Du, Weian; Hou, Yang-Yang; Ruan, Chang‐Chun; Desneux, Nicolas

doi:10.1002/ps.4795

Cited by 70 publications

(49 citation statements)

References 31 publications

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“…Our study newly demonstrates that Anastatus fulloi, A. gansuensis, A. meilingensis and A. japonicus are natural egg parasitoids of Caligula japonica and thus are potential biological control agents of this pest in China. Further, all four species were reared successfully on the eggs of the alternate host, A. pernyi in the laboratory, as for some Trichogramma species (Zhang et al 2017;Li et al 2018), which demonstrates the possibility of massrearing the species for augmentative release against C. japonica. However, further study is required to evaluate their parasitism and possible competition in the field for biological control efficacy, as well as any effects of adaptation on A. pernyi eggs upon field-release.…”

Section: Discussionmentioning

confidence: 90%

Anastatus Motschulsky (Hymenoptera, Eupelmidae): egg parasitoids of Caligula japonica Moore (Lepidoptera, Saturniidae) in China

Chen¹,

Gibson²,

Peng³

et al. 2019

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Four species of Anastatus Motschulsky (Hymenoptera, Eupelmidae, Eupelminae) are newly reported as egg parasitoids of the Japanese giant silkworm, Caligula japonica Moore and, as an alternate laboratory host, the Chinese oak silk moth, Antheraea pernyi (Guérin-Méneville) (Lepidoptera, Saturniidae) in China. The four species, A. fulloi Sheng & Wang, 1997, A. gansuensis Chen & Zang, sp. nov., A. japonicus Ashmead, 1904, and A. meilingensis Sheng, 1998, were reared initially from eggs of C. japonica collected in Gansu, Jilin and Liaoning provinces and subsequently cultured in the laboratory on eggs of A. pernyi. An illustrated key to differentiate females of the four species, and males of some of the species is provided. Key features are illustrated, both sexes of the new species are described, and diagnoses of females of the other species are given.

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Section: Discussionmentioning

confidence: 90%

Anastatus Motschulsky (Hymenoptera, Eupelmidae): egg parasitoids of Caligula japonica Moore (Lepidoptera, Saturniidae) in China

Chen¹,

Gibson²,

Peng³

et al. 2019

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“…Zhang et al. () recently showed that Trichogramma dendrolimi Matsumura benefits from the diapause state in terms of quality of long‐term cold storage and parasitism efficiency on the Asian corn borer, O. furnacalis , during mass releases. Fundamental research will help improve such methods by focusing on costs of diapause, on diapause induction and termination signals, and on getting a better knowledge of diapause heritability.…”

Section: Pursuing Studies On Diapausementioning

confidence: 99%

“…Thus, research currently focuses on improving storage methods in order to produce effective natural enemies whilst balancing production costs. Zhang et al (2018) recently showed that Trichogramma dendrolimi Matsumura benefits from the diapause state in terms of quality of long-term cold storage and parasitism efficiency on the Asian corn borer, O. furnacalis, during mass releases.…”

Section: Implications For Pest Controlmentioning

confidence: 99%

Diapause research in insects: historical review and recent work perspectives

Tougeron

2019

Entomologia Exp Applicata

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All organisms on Earth have evolved biological rhythms to face alternation of periods of favorable and unfavorable environmental conditions, at various temporal scales. Diapause is a state of seasonal dormancy adapted to recurring periods of adverse environmental conditions and triggered by biotic and abiotic factors that precede the arrival of these conditions. Several monographs already review the mechanisms of diapause expression in arthropods, from initiation to termination phases. Rather than adding another review to the literature on this topic, this paper primarily aims to link past concepts on seasonal strategies with new perspective on diapause research in arthropods. By focusing on insects, I examine the legacy of diapause history research in terrestrial arthropods since antiquity but mostly over the past 3 centuries, its contribution to the understanding of insect seasonal ecology, and I explore some of the reasons why it is still relevant to study diapause. I highlight some of the topical issues on which current work focuses to better understand and integrate arthropod diapause with their ecology, especially in the climate change context and for the provision of ecosystem services.

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“…Therefore, it is important to improve the quality of preservation. Diapause can be an effective tool to solve this problem [9] .…”

Section: Introductionmentioning

confidence: 99%

High-throughput profiling of diapause regulated genes from Trichogramma dendrolimi, an important egg parasitoid

Zhang¹,

Du²,

Zhang³

et al. 2020

Preprint

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Background The parasitoid insect Trichogramma dendrolimi can successfully enter diapause at the prepupal stage. Thus, diapause is an efficient preservation method during the mass production of T. dendrolimi. Previous studies on diapause have focused mostly on ecological characteristics, so the molecular mechanism of diapause in T. dendrolimi is mostly unknown. In this study, we compared transcriptomes of diapause and non-diapause T. dendrolimi to identify genes involved in the development of diapause. Results Transcriptome sequencing was performed using different samples, including diapause prepupae, pupae after diapause, normal prepupae, and pupae. This initially yielded a total of 87,022 unigenes with an average length of 1,604 bp. By removing redundant sequences and those without significant BLAST hits, a non-redundant dataset was generated, containing 7,593 sequences with an average length of 3351 bp. Among the differentially expressed genes, 1,204 were specifically expressed during the diapause stage, and 820 were significantly up-regulated. The result of GO enrichment analysis revealed that binding, oxidation−reduction process, and ribosome biogenesis were significantly affected. Ten genes were selected for validation using a quantitative real-time PCR (qPCR). The changes showed the same trend between the qPCR and RNA-Seq results. Based on previous studies and our data, several genes were identified to be involved in diapause, including UDP-glucuronosyltransferase; Glutathione-S-transferase, ATGs, zinc finger protein genes, cell cycle-related genes, Trehalase, trehalose transporter, hsp68, p53, and DNA damage-regulated gene 1 (pdrg1), and genes related to lipid metabolism were also included. Conclusions In this study, we generated a great amount of transcriptome data from T. dendrolimi, providing a resource for gene function research. The diapause-related genes that we identified establish a valuable basis for future studies on the molecular mechanisms of diapause, not only for T. dendrolimi, but for other species as well.

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Advantages of diapause in Trichogramma dendrolimi mass production on eggs of the Chinese silkworm, Antheraea pernyi

Cited by 70 publications

References 31 publications

Anastatus Motschulsky (Hymenoptera, Eupelmidae): egg parasitoids of Caligula japonica Moore (Lepidoptera, Saturniidae) in China

Anastatus Motschulsky (Hymenoptera, Eupelmidae): egg parasitoids of Caligula japonica Moore (Lepidoptera, Saturniidae) in China

Diapause research in insects: historical review and recent work perspectives

High-throughput profiling of diapause regulated genes from Trichogramma dendrolimi, an important egg parasitoid

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